Question

15. A test consists of ‘True’ or ‘False’ questions. One mark is awarded for every correct answer
while 1⁄4 mark is deducted for every wrong answer. A student knew answers to some of the
questions. Rest of the questions he attempted by guessing. He answered 120 questions and got
90 marks.
(i) If answer to all questions he attempted by guessing were wrong, then how many questions
did he answer correctly?
(ii) How many questions did he guess?
(iii) If answer to all questions he attempted by guessing were wrong and answered 80 correctly,
then how many marks he got?
(iv) If answer to all questions he attempted by guessing were wrong then how many questions
answered correctly to score 95 marks?
no spams

Answer 1

Step-by-step explanation:

i) 90

ii) 30

iii) 80

iv) 95

Answer 2

Answer:

90

30

80

95

......... this is the answers